unstable formation 中文意思是什麼
unstable formation
解釋
不穩定巖層-
Having analyzed preliminarily formation mechanism of these common characteristics of anomaly, it concludes that : these are results, controlled by basically united tectonic stress field of large - range, caused by stress - strain accumulation and certain phase strong earthquakes, according to deformation difference brought about in tectonic position along the boundary zone and within second - order faults of active blocks resulted from unstable and inharmonious features for movement of block system at different levels and deformation of boundary
分析這些異常共性特徵的形成機制，初步認為：是在基本統一的大區域構造應力場控制下，不同層次塊體系統運動及其邊界帶變形的非平穩、非協調性，在活動地塊邊界地帶和地塊內部次級斷裂構造部位產生變形差異而導致應力-應變積累、孕育強震到一定階段的結果。 -
Because geometry of formation of two satellites is very weak, the solution covariance is very big and unstable in order to resolve this problem, the measurement model was transformed from cartesian coordinate system to sphere coordinate system
由於雙星編隊星座觀測的幾何結構弱，所以解算參數的協方差不穩定。為了解決這一問題，對測量方程進行球坐標變換。 -
Abstract : according to sidewall unstable problem during dr illing, the study on sidewall stability is developed. the paper analyses sidewall stress state and sidewall unstable type, and combines with log data and indoor e xperimental result of core. through analysis and calculation, the method of calcul ating slough formation pressure is proposed. by application of the method in 3 wells in yancheng area, result shows that slough pressure section fits in with field practical condition. it supplies some basis for design of drilling fluid d ensity
文摘:針對鉆井中井壁失穩問題開展井壁穩定性研究，文中就井壁應力狀態和失穩類型進行分析計算，並結合測井資料和巖心的室內實驗結果進行分析，建立了一套計算地層坍塌壓力的方法，結合鹽城地區3口井應用對比，坍塌壓力剖面基本吻合現場實際，為鉆井液密度設計提供了一定的依據。 -
Abstract : the authors discuss roundly source of loose earth fo r impact - deposit debris flow to develop taking pingchuan debris flow, one of the quite typical impact - deposit debris flows in southwest sichuan province ， as an example in this paper. on the basis of detailed investigations in - situ, geotechn ial testing in lab and theory analysis, all results indicate obviously that moder ate and bulky loose earth in giant debris flow situating in southwest sichuan mo untainous area are main institute, whose tribulation are consistent with landform s. loose earth locating in mid - forepart catchment are quite unstable, so often be comes main source of loose earth of debris flow. formation of loose earth is cont rolled principally by geologic and geotechnical environment while human actions is the secondary factor for loose earth to form. in many times, human actions prov ide loose earth through loose earth stability
文摘:本文以極具典型的平川泥石流為例比較全面的分析了沖淤變動型泥石流的物源問題.根據現場調研及室內巖土分析進行的研究成果顯示，川西南高山深谷地區的大型泥石流溝中的鬆散土體以中、粗粒段為主，其分佈與地形密切相關；位於泥石流溝中、前部位的鬆散土體的穩定性最差，是補給泥石流的重要物源；鬆散土體的發育主要受控于地質及巖土環境，人類活動只能影響鬆散土體的穩定性 -
The paper introduces the fundamentals of the temperature distribution in the borehole drilled in the frozen formation, and discusses the ascertainment of these parameters, including the mass quantity of circulation medium, the coefficient of thermal conductivity of drilling rods, the coefficient of the intensity of heat exchange and the coefficient of unstable heat exchange between the rock and the circulation medium, and the rising of the temperature of the circulation medium in the bottom of the bore
摘要介紹了凍土鉆孔內溫度分佈研究的理論基礎，其中主要討論了沖洗介質的質量流量、鉆桿桿壁的導熱系數、巖石同沖洗介質的熱交換強度系數與不穩定熱交換系數，以及孔底沖洗介質溫度升高值的確定。 -
The formation of the scoured pits is related with such factors as the unstable flow velocity and the unstable flow state caused by the circumfluence in the cross direction, the upstream circumfluence and the circle flow around the embankment
沖刷坑的形成與橫向環流、上游迴流和繞流丁壩造成流速及流態不均勻等因素有關；根石走失與根石在水中的穩定性和河床性質及壩腳附近沖坑有關。 -
By using the method of construct boundary condition at the entrance, it did a research on the formation principle of karman vortex and believed that there was no direct relationship between the formation and the object itself. the existence of the object just provided a basic current in the space to generate a absolutely unstable district and so the explanation of absolutely unstable model near wake flow is more suitable
通過採用構造入口邊界條件的方法，對k rm n渦街的形成機理進行研究，認為渦街的生成與物體本身無直接關系，物體的存在只是在空間內提供了可以產生絕對不穩定區域的基本流，因而近尾跡絕對不穩定模式的解釋較為合適。
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